Online spraying device for rubber sealing element

Abstract

The invention relates to the technical field of spraying devices, and provides an on-line spraying device for a rubber sealing element, which comprises two groups of winding mechanisms, one group of winding mechanisms is used for loosening a sealing strip, the other group is used for winding, and the two groups of winding mechanisms are used for tightening the sealing strip; the detection mechanism is arranged on the moving path of the sealing strip and abuts against the sealing strip so as to detect defects; the heating and dust removing mechanism is arranged on the moving path of the sealing strip, and the sealing strip moves to drive the heating and dust removing mechanism to change the exhaust direction through the detection mechanism so as to heat the sealing strip and blow air to remove impurities; and the spraying head is used for spraying the sealing strip subjected to tightening, impurity removal and heating. According to the technical scheme, the technical problem that in the related technology / prior art, when the rubber sealing strip is directly sprayed, due to the fact that dust, chippings and other impurities possibly exist on the surface of the sealing strip or the defects of concaves, protrusions and the like exist, a coating is directly covered, and then the subsequent finished product quality is affected is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of spraying devices, and in particular, to an online spraying device for rubber seals. Background Art

[0002] Rubber seals are generally round or strip-shaped rubber products used for leak prevention. Natural rubber, for example, exhibits high elasticity at room temperature, a slight degree of plasticity, and excellent mechanical strength. Furthermore, it exhibits low hysteresis losses and generates little heat after repeated deformation, resulting in excellent flexural resistance. Furthermore, because natural rubber is non-polar, it also offers excellent electrical insulation properties. Strip rubber seals are used, for example, between the door and the cabinet body of a distribution cabinet to enhance sealing. These strip rubber seals have a regular surface.

[0003] Strip rubber sealing strips are usually extruded through an extruder and directly rolled up after cooling. In order to meet different usage requirements, some strip rubber sealing strips will be sprayed again on the production line after cooling, that is, online spraying, so that the product can better meet the usage requirements. Existing spraying devices often spray the strip sealing strips directly. If there are impurities or defects on the surface of the sealing strip, direct spraying may cause these problems to be covered up, thereby reducing the quality of subsequent finished products. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides an online spraying device for rubber seals, which solves the technical problem in the related art / existing art that direct spraying affects the quality.

[0005] According to one aspect, at least one embodiment of the present invention provides an online spraying device for rubber seals, comprising: There are two winding mechanisms, one for loosening the sealing strip and the other for winding it, and both winding mechanisms act to tighten the sealing strip; A detection mechanism is provided on the moving path of the sealing strip and presses against the sealing strip to detect defects; The heating and dust removal mechanism is arranged on the moving path of the sealing strip. When the sealing strip moves, the heating and dust removal mechanism is driven by the detection mechanism to change the exhaust direction, so as to heat the sealing strip and blow air to remove impurities. The nozzle is used to spray the sealing strip after it has been tightened, cleaned and heated.

[0006] Furthermore, the winding mechanism includes: Winding disc, used to wind or loosen the sealing strip; A driving member, which drives the winding disk to rotate and is detachably connected to the winding disk; The support seat is connected to the driving member.

[0007] Furthermore, the driving member includes: The driving rod has a driving ridge formed on its outer periphery and slides into the center of the winding disk; The driving motor and the driving shaft are axially connected with the driving rod and assembled on the supporting seat.

[0008] Furthermore, the detection mechanism includes: The follower roller presses against the sealing strip; The mounting frame is formed with an opening toward the sealing strip and is rotatably connected to the follower roller via a rotating shaft; A recovery member is provided on the support seat and is connected to the mounting frame so as to enable the sealing strip to adapt itself when it is concave or convex; A displacement sensor is connected to the recovery member to detect the displacement of the follower roller caused by a defect.

[0009] Furthermore, the recovery element includes: The sleeve is fixedly connected to the support base through the mounting bracket; One end of the moving rod slides into the interior of the sleeve and is connected to the inner wall of the sleeve through a return spring, and the other end is fixedly connected to the mounting bracket.

[0010] Furthermore, the heating and dust removal mechanism includes: A rotating drum, the diameter of which is smaller in the middle than in the top and bottom, the drum is provided with a spray hole, and the drum is connected to a follower roller by transmission; A connecting plate is assembled on one side of the mounting frame, and the rotating drum is rotatably connected to the connecting plate; The rotary joint is connected to the bottom of the drum for introducing hot air.

[0011] Furthermore, the heating dust removal mechanism also includes: The transmission gears are respectively connected to the follower roller and the rotating drum and mesh with each other.

[0012] Furthermore, a mounting ring is mounted on the nozzle, and the mounting ring is assembled on the support seat.

[0013] Furthermore, it also includes: The guide rollers are rotatably arranged on the support seat and are located on both sides of the sealing strip to guide the sealing strip.

[0014] Furthermore, there are multiple nozzles, which are evenly spaced and distributed on the mounting ring.

[0015] The beneficial effects of the embodiments of the present invention are: In the present invention, two sets of winding mechanisms are used to keep the sealing strip in a taut state, so that the surface tension is evenly distributed, which facilitates the uniform spreading of the coating and reduces defects such as orange peel and sagging. At the same time, the contact area between the coating and the substrate is increased to enhance the bonding force. The sealing strip tension detection mechanism can timely detect defects such as depressions and protrusions in the sealing strip to prevent the defects from being covered by the coating. The heating and dust removal mechanism can remove surface moisture and impurities and activate the surface of the sealing strip, further laying the foundation for improving the quality of spray molding.

[0016] In the present invention, the detachable connection between the driving part and the winding disk in the winding mechanism facilitates the replacement of sealing strips or winding disks of different specifications, thereby improving the versatility of the equipment and the efficiency of material replacement; the residual heat of the heated sealing strip can accelerate the drying speed of the coating and reduce the time of the subsequent drying process; the guiding effect of the guide roller on the sealing strip avoids the shutdown adjustment caused by deviation, thereby ensuring the continuous production.

[0017] In the present invention, the detection mechanism is driven by the heating and dust removal mechanism, and no additional power is required to control the exhaust direction, which simplifies the equipment structure and control logic, reduces the failure rate, and multiple equally spaced nozzles can avoid spraying dead angles, ensure uniform coating thickness, and improve product consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 for Figure 1 A structural diagram of another perspective of an embodiment of the present invention; Figure 3 for Figure 1 A schematic structural diagram of a driving motor in an embodiment of the present invention; Figure 4 for Figure 2 A schematic structural diagram of a rotating drum in an embodiment of the present invention; Figure 5 for Figure 2 A schematic structural diagram of a winding disk in an embodiment of the present invention; Figure 6 for Figure 2 Schematic diagram of a partially split structure in the embodiment of the present invention; In the figure: 1. Winding mechanism; 11. Winding disk; 12. Driving rod; 121. Driving rib; 13. Driving motor; 14. Support seat; 2. Detection mechanism; 21. Follower roller; 22. Mounting frame; 23. Displacement sensor; 24. Sleeve; 25. Assembly frame; 26. Moving rod; 27. Return spring; 3. Heating and dust removal mechanism; 31. Rotating drum; 311. Spray hole; 32. Connecting plate; 33. Rotary joint; 34. Transmission gear; 4. Spray nozzle; 5. Mounting ring; 6. Guide roller; 7. Sealing strip. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0021] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0022] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0023] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0024] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0025] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] like Figure 1 As shown, it shows an online spraying device for rubber seals in one embodiment of the present invention, comprising: The winding mechanism 1 is provided with two groups, one group of winding mechanisms 1 loosens the sealing strip, and the other group winds it, and the two groups of winding mechanisms 1 act on the sealing strip to tighten; Detection mechanism 2, which is arranged on the moving path of the sealing strip and presses against the sealing strip to detect defects; The heating and dust removal mechanism 3 is arranged on the moving path of the sealing strip. When the sealing strip moves, the heating and dust removal mechanism 3 is driven by the detection mechanism 2 to change the exhaust direction, so as to heat the sealing strip and blow air to remove impurities. Spray head 4, sprays the tightened, cleaned and heated sealing strip; In the stretched state, the surface tension of the sealing strip is evenly distributed, and the coating is easier to spread evenly during spraying, reducing defects such as orange peel and sagging. The surface microstructure is "flattened", the contact area between the coating and the substrate is larger, and the bonding force is stronger.

[0027] Two groups of winding mechanisms 1 cooperate with each other, one group loosens the sealing strip and the other group winds it. The sealing strip is kept taut by pulling force to ensure that the position of the sealing strip is stable during subsequent processing. At the same time, the taut sealing strip increases the contact area during spraying. When the sealing strip is moving, the detection mechanism 2 is pressed against the surface of the sealing strip. When there are concave or convex defects in the sealing strip, the detection mechanism 2 can sense these changes and realize defect detection. At the same time, the movement of the sealing strip drives the detection mechanism 2 to operate, and then drives the heating and dust removal mechanism 3 to change the exhaust direction, so that the heating and dust removal mechanism 3 can not only heat the sealing strip, remove surface moisture or activate the surface, which is conducive to coating adhesion, but also remove surface impurities (such as dust and debris) by blowing air. The sealing strip after tensioning, defect detection, heating and impurity removal is finally sprayed by the nozzle 4, which avoids impurities or defects being covered by the coating and improves the spraying quality.

[0028] like Figure 2 and Figure 3As shown, the winding mechanism 1 includes: a winding disc 11 for winding or releasing the sealing strip; a driving member for driving the winding disc 11 to rotate and being detachably connected to the winding disc 11; and a supporting seat 14 connected to the driving member.

[0029] The support seat 14 provides a base for the installation and fixation of the driving member to ensure the stable operation of the driving member. The driving member drives the winding disk 11 to rotate. When the sealing strip needs to be loosened, the corresponding winding disk 11 rotates in the opposite direction under the drive of the driving member to release the sealing strip; the other set of winding disks 11 rotates forward under the drive of the driving member to wind the sealing strip. The reverse movement of the two sets of winding disks 11 cooperates to keep the sealing strip in a taut state at all times. Since the driving member and the winding disk 11 are detachably connected, when sealing strips or winding disks 11 of different specifications need to be replaced, they can be quickly disassembled and replaced, thereby improving the versatility and maintenance convenience of the device.

[0030] like Figure 2 and Figure 5 As shown, the driving member includes: a driving rod 12, the outer periphery of which is formed with a driving rib 121 and slides into the center of the winding disk 11; a driving motor 13, the driving shaft of which is axially connected to the driving rod 12 and assembled on the support base 14.

[0031] The support seat 14 fixes the drive motor 13 to ensure its stable operation. The drive shaft of the drive motor 13 is axially connected to the drive rod 12. When the drive motor 13 is working, it drives the drive rod 12 to rotate. The drive ridges 121 on the outer periphery of the drive rod 12 cooperate with the center of the winding disk 11 to transmit the rotational force to the winding disk 11, so that the winding disk 11 rotates synchronously with the drive rod 12 to realize the winding or loosening of the sealing strip. The drive rod 12 slides into the center of the winding disk 11, which not only ensures the stable transmission of power, but also facilitates the disassembly of the winding disk 11 (when the winding disk 11 needs to be replaced, only the drive rod 12 needs to be slided out of the winding disk 11), thereby improving the operating efficiency.

[0032] like Figure 2 and Figure 4 As shown, the detection mechanism 2 includes: a follower roller 21, which is pressed against the sealing strip; a mounting frame 22, which forms an opening toward the sealing strip and is rotatably connected to the follower roller 21 through a rotating shaft; a recovery member, which is arranged on the support seat 14 and is connected to the mounting frame 22, so that the sealing strip can adapt when it is concave or convex; a displacement sensor 23, which is connected to the recovery member to detect the displacement of the follower roller 21 caused by defects.

[0033] The mounting frame 22 forms an opening toward the sealing strip, and the follower roller 21 is rotatably connected to the mounting frame 22 via a rotating shaft, so that the follower roller 21 can rotate freely. The recovery member is mounted on the support seat 14 and connected to the mounting frame 22. When the sealing strip is concave or convex, the recovery member deforms (such as stretching), driving the mounting frame 22 and the follower roller 21 to adaptively adjust their positions, ensuring that the follower roller 21 is always pressed against the surface of the sealing strip. As the sealing strip is tightened, the defects at the concave part are further enlarged, and the displacement change of the follower roller 21 is captured by the displacement sensor 23. The displacement sensor 23 converts the displacement signal into an electrical signal, thereby realizing the detection of surface defects (concave, convex) of the sealing strip. This process can detect quality problems of the sealing strip in real time, avoid defects being covered up by subsequent spraying, and improve the quality of the finished product.

[0034] like Figure 4 and Figure 6 As shown, the recovery part includes: a sleeve 24, which is fixedly connected to the support seat 14 through an assembly frame 25; a moving rod 26, one end of which slides into the interior of the sleeve 24 and is connected to the inner wall of the sleeve 24 through a reset spring 27, and the other end is fixedly connected to the mounting frame 22.

[0035] The sleeve 24 is fixed to the support seat 14 through the assembly frame 25, providing a stable installation foundation for the recovery part. One end of the moving rod 26 slides into the interior of the sleeve 24, and the other end is fixedly connected to the mounting frame 22 of the detection mechanism 2. The reset spring 27 is connected between the moving rod 26 and the inner wall of the sleeve 24. When the sealing strip is recessed, the follower roller 21 moves under the elastic force of the reset spring 27, driving the moving rod 26 to slide outward of the sleeve 24, and the reset spring 27 is stretched. When the sealing strip is convex, the convex part pushes the follower roller 21 to move upward, driving the moving rod 26 to slide into the sleeve 24, and the reset spring 27 is compressed. The elastic force of the reset spring 27 ensures that the moving rod 26 and the mounting frame 22 drive the follower roller 21 to always be in close contact with the sealing strip, ensuring that the displacement sensor 23 can accurately detect defects in the sealing strip and improve the reliability of detection.

[0036] like Figure 4 As shown, the heating and dust removal mechanism 3 includes: The middle diameter of the rotating drum 31 is smaller than the top and bottom diameters. A spray hole 311 is provided on the rotating drum 31, and the rotating drum 31 is transmission-connected to the follower roller 21. A connecting plate 32 is assembled on one side of the mounting frame 22, and the rotating drum 31 is rotationally connected to the connecting plate 32. A rotary joint 33 is connected to the bottom of the rotating drum 31 for introducing hot air.

[0037] The connecting plate 32 is installed on one side of the mounting frame 22 of the detection mechanism 2, and the rotating drum 31 is rotatably connected to the connecting plate 32 so that the rotating drum 31 can rotate freely. The middle diameter of the rotating drum 31 is smaller than the top and bottom diameters, and a spray hole 311 is opened on the surface. At the same time, the rotating drum 31 is transmission-connected with the follower roller 21. When the follower roller 21 rotates due to the movement of the sealing strip, the rotating drum 31 is driven to rotate synchronously. The rotary joint 33 is connected to the bottom of the rotating drum 31, and hot air is introduced into the rotating drum 31, and the hot air is ejected through the spray hole 311. Since the rotating drum 31 rotates and the middle diameter is small, the exhaust direction of the spray hole 311 changes with the rotation of the rotating drum 31, which can fully cover the surface of the sealing strip, realize heating of the sealing strip and multi-directional blowing and impurity removal, and ensure the cleanliness of the subsequent spraying surface.

[0038] After heating the rubber sealing strip and spraying it, the hot air ejected from the drum 31 of the heated dust removal mechanism 3 can increase the molecular activity of the sealing strip surface, enhance the bonding force with the spraying material, and improve the adhesion of the coating. At the same time, heating can remove surface moisture to avoid defects such as bubbles and pinholes caused by water evaporation after spraying. The uniform heating achieved by changing the exhaust direction by rotating the drum 31 can allow the paint sprayed from the nozzle 4 to cover the surface more evenly, ensuring a consistent coating thickness. The residual heat of the sealing strip can accelerate the drying speed of the coating, shorten the drying time, improve production efficiency, and ultimately improve the spraying quality and product performance.

[0039] The heating dust removal mechanism 3 further includes a transmission gear 34 axially connected to the follower roller 21 and the rotating drum 31 and meshing with each other.

[0040] The transmission gear 34 is respectively connected to the follower roller 21 and the rotating drum 31, and the two transmission gears 34 are engaged with each other. When the sealing strip moves and drives the follower roller 21 to rotate, the transmission gear 34 on the follower roller 21 rotates synchronously, and the transmission gear 34 on the rotating drum 31 is driven to rotate through the gear meshing, thereby driving the rotating drum 31 to rotate. This gear transmission method ensures the rotation synchronization of the follower roller 21 and the rotating drum 31, matches the rotation speed of the rotating drum 31 with the moving speed of the sealing strip, and ensures that the hot air ejected from the nozzle 311 can continuously and evenly act on the surface of the sealing strip, thereby improving the stability and efficiency of heating and impurity removal.

[0041] like Figure 2 As shown, a mounting ring 5 is mounted on the nozzle 4 , and the mounting ring 5 is assembled on the support seat 14 . There are multiple nozzles 4 , and they are evenly spaced and distributed on the mounting ring 5 .

[0042] The mounting ring 5 is mounted on the nozzle 4, and the mounting ring 5 is fixed on the support seat 14, providing a stable mounting support for the nozzle 4, ensuring that the nozzle 4 is fixed in position during the spraying process. When the pretreated sealing strip moves to the nozzle 4 position, multiple nozzles 4 spray the sealing strip from different angles at the same time. The equally spaced distribution design ensures that every area of ​​the sealing strip surface can be covered by spraying, avoiding dead corners in spraying, making the coating thickness uniform, and improving the spraying quality and appearance consistency of the sealing strip.

[0043] like Figure 2 As shown, the system also includes guide rollers 6, rotatably mounted on a support base 14 and located on either side of the sealing strip to guide it. When the sealing strip moves under the drive of the two winding mechanisms 1, the guide rollers 6 on either side contact the sides of the sealing strip (two sides; in use, one adheres to the cabinet body, and the other is used to press against the cabinet door when closed. Therefore, only these two sides need to be inspected to ensure quality), limiting the lateral movement of the sealing strip and preventing it from drifting left or right. Because the guide rollers 6 are rotatable, rolling friction between them and the sealing strip reduces wear on the sealing strip surface, ensuring stable movement of the sealing strip along the set path and providing a stable position for subsequent inspection, heating and impurity removal, and spraying.

[0044] During operation, the two winding mechanisms 1 work in coordination: the winding discs 11 of one group release the sealing strip under the action of the driving motor 13 driving the driving rod 12, and the winding discs 11 of the other group wind synchronously to keep the sealing strip taut.

[0045] During the movement, the sealing strip first passes through the guide rollers 6 , which are located on both sides of the sealing strip and are rotatably mounted on the support base 14 , thereby limiting the lateral deviation of the sealing strip and ensuring a stable movement path.

[0046] Subsequently, the follower roller 21 of the detection mechanism 2 is connected to the rotating shaft through the mounting bracket 22, and the recovery sleeve 24 is fixed to the support seat 14 through the assembly bracket 25. One end of the moving rod 26 extends into the sleeve 24 and is connected through the reset spring 27, and the other end is connected to the mounting bracket 22 to press against the sealing strip; when the sealing strip has a depression or a protrusion, the reset spring 27 is extended and retracted to drive the moving rod 26 to slide in the sleeve 24, so that the follower roller 21 is adaptively fitted, and the displacement sensor 23 detects the displacement of the follower roller 21 to identify defects.

[0047] At the same time, when the follower roller 21 rotates, the rotating drum 31 of the heating and dust removal mechanism 3 is driven to rotate through the mutually meshing transmission gears 34; the rotary joint 33 introduces hot air into the rotating drum 31, and the hot air can be supplied by the connected hot air supply equipment, and the hot air is ejected through the nozzle 311. Since the rotating drum 31 rotates and the diameter of the middle part is small, the direction of the hot air changes continuously, thereby achieving heating and impurity removal of the sealing strip.

[0048] Finally, the sealing strip that has been tightened, guided, tested, heated and cleaned of impurities moves to the position of the nozzle 4. Multiple nozzles 4 distributed at equal intervals on the mounting ring 5 fixed on the support seat 14 spray it from multiple angles, completing the entire online spraying process.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An online spraying device for rubber seals, characterized in that: include: The winding mechanism (1) is provided with two groups, one group of winding mechanisms (1) loosens the sealing strip, and the other group winds it, and the two groups of winding mechanisms (1) act on the sealing strip to tighten; A detection mechanism (2) is arranged on the moving path of the sealing strip and presses against the sealing strip to detect defects; The heating dust removal mechanism (3) is arranged on the moving path of the sealing strip, and is driven by the movement of the sealing strip to change the exhaust direction through the detection mechanism (2) to heat the sealing strip and blow air to remove impurities; The spray head (4) sprays the tightened, cleaned and heated sealing strip.

2. The online spraying device for rubber seals according to claim 1, characterized in that: The winding mechanism (1) comprises: A winding disc (11) for winding or releasing the sealing strip; A driving member, which drives the winding disk (11) to rotate and is detachably connected to the winding disk (11); The support seat (14) is connected to the driving member.

3. The online spraying device for rubber seals according to claim 2, characterized in that: The driving member includes: A driving rod (12) having a driving rib (121) formed on its outer periphery and slidingly extending into the center of the winding disk (11); The driving motor (13) has a driving shaft connected to the driving rod (12) and is assembled on the supporting base (14).

4. The online spraying device for rubber seals according to claim 2, characterized in that: The detection mechanism (2) comprises: A follower roller (21) presses against the sealing strip; The mounting frame (22) is formed with an opening toward the sealing strip and is rotationally connected to the follower roller (21) via a rotating shaft; A recovery member is provided on the support seat (14), and the recovery member is connected to the mounting frame (22); A displacement sensor (23) is connected to the recovery member to detect the displacement of the follower roller (21) caused by a defect.

5. The online spraying device for rubber seals according to claim 4, characterized in that: The recovery element includes: The sleeve (24) is fixedly connected to the support base (14) through the assembly frame (25); The movable rod (26) has one end that slides into the interior of the sleeve (24) and is connected to the inner wall of the sleeve (24) via a return spring (27), and the other end that is fixedly connected to the mounting frame (22).

6. The online spraying device for rubber seals according to claim 4, characterized in that: The heating and dust removal mechanism (3) comprises: The rotating drum (31) has a middle diameter smaller than the top and bottom diameters, a spray hole (311) is provided on the rotating drum (31), and the rotating drum (31) is transmission-connected to the follower roller (21); A connecting plate (32) is mounted on one side of the mounting frame (22), and the rotating drum (31) is rotatably connected to the connecting plate (32); The rotary joint (33) is in communication with the bottom of the rotating drum (31) for introducing hot air.

7. The rubber seal online spraying device according to claim 6, characterized in that: The heating and dust removal mechanism (3) further comprises: The transmission gear (34) is respectively connected to the follower roller (21) and the rotating drum (31) and meshes with each other.

8. The online spraying device for rubber seals according to claim 2, characterized in that: The nozzle (4) is sleeved with a mounting ring (5), and the mounting ring (5) is assembled on the support seat (14).

9. An online spraying device for rubber seals according to any one of claims 2 to 8, characterized in that: Also includes: The guide rollers (6) are rotatably mounted on the support seat (14) and are located on both sides of the sealing strip to guide the sealing strip.

10. The online spraying device for rubber seals according to claim 8, characterized in that: There are multiple nozzles (4) distributed at equal intervals on the mounting ring (5).

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